Thermal transfer recording sheet

Abstract

The present invention provides a thermal transfer recording sheet which can form a matte and glossless image high in quality on an image receiving sheet. This thermal transfer recording sheet comprises a support and an undercoating layer comprising a heat-meltable olefin resin and a heat-meltable ink layer laminated in succession on one side of said support wherein difference in melting point of the undercoating layer and that of the heat-meltable ink layer is 20 DEG C. or less and the undercoating layer and the heat-meltable ink layer mix with each other and melt in the vicinity of interface therebetween after coating of these layers. The thickness of the under coating layer is preferably 0.5-5.0 mu m.

What is claimed is: 
     
       1. A thermal transfer recording sheet which comprises a support, an undercoating layer comprising a heat-meltable olefin resin, and a heat-meltable ink layer laminated in succession on one side of said support, wherein the thickness of the undercoating layer is 0.5 to 5 μm, and wherein the heat meltable ink layer has a thickness of 1 to 15 μm, the difference in melting point of the under-coating layer and that of the heat-meltable ink layer being 20 C. or less, and wherein the application of the heat-meltable ink layer to the undercoating layer results in said layers being mixed with each other in the vicinity of the interface therebetween after being coated on the support. 
     
     
       2. A thermal transfer recording sheet according to claim 1 wherein the olefin resin is at least one resin selected from the group consisting of polyethylene resin, polypropylene resin and polybutene resin. 
     
     
       3. A thermal transfer recording sheet according to claim 1 wherein the thickness of the undercoating layer is 1.0-3.0 μm. 
     
     
       4. A thermal transfer recording sheet according to claim 1 wherein the support is a polyester film.